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我試圖將圖像添加到帶有每張圖片下的文本標籤的gridview。當我運行代碼時，它總是強制關閉。我無法弄清楚代碼有什麼問題。Android - 帶有圖標和文本的Gridview
package com.petedroid.euro2012;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.TextView;
public class psquads extends Activity
{
@Override
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
GridView gridview = (GridView) findViewById(R.id.gridview);
gridview.setAdapter(new ImageAdapter(this));
}
public class ImageAdapter extends BaseAdapter
{
private Context mContext;
public ImageAdapter(Context c) {
mContext = c;
}
public int getCount() {
return mThumbIds.length;
}
public Object getItem(int position) {
return null;
}
public long getItemId(int position) {
return 0;
}
public View getView(int position, View convertView, ViewGroup parent){
View MyView = convertView;
if (convertView == null) {
//Inflate Layout
LayoutInflater li = getLayoutInflater();
MyView = li.inflate(R.layout.griditem, null);
//Get Image
ImageView iv = (ImageView)MyView.findViewById(R.id.grid_item_image);
iv.setImageResource(mThumbIds[position]);
//Get Text
TextView tv = (TextView)MyView.findViewById(R.id.grid_item_text);
tv.setText(names[position]);
}
return MyView;
}
}
//Images
private Integer[] mThumbIds = {
R.drawable.croatia, R.drawable.republic,
R.drawable.denmark, R.drawable.england,
R.drawable.france, R.drawable.germany,
R.drawable.greece, R.drawable.ireland,
R.drawable.italy, R.drawable.netherlands,
R.drawable.poland, R.drawable.portugal,
R.drawable.russia, R.drawable.spain,
R.drawable.sweden, R.drawable.ukraine,};
//Text
private String[] names={
"Croatia","Czech Republic","Denmark", "England",
"France","Germany","Greece", "Ireland",
"Italy", "Netherlands", "Poland", "Portugal",
"Russia", "Spain", "Sweden", "Ukraine", };
}
這裏是日誌
04-21 00:07:33.384: E/global(27521): Deprecated Thread methods are not supported.
04-21 00:07:33.384: E/global(27521): java.lang.UnsupportedOperationException
04-21 00:07:33.384: E/global(27521): at java.lang.VMThread.stop(VMThread.java:85)
04-21 00:07:33.384: E/global(27521): at java.lang.Thread.stop(Thread.java:1379)
04-21 00:07:33.384: E/global(27521): at java.lang.Thread.stop(Thread.java:1344)
04-21 00:07:33.384: E/global(27521): at com.petedroid.euro2012.SplashScreenActivity$1.run(SplashScreenActivity.java:35)
04-21 00:07:35.368: D/AndroidRuntime(27521): Shutting down VM
04-21 00:07:35.368: W/dalvikvm(27521): threadid=1: thread exiting with uncaught exception (group=0x4001d7d0)
04-21 00:07:35.380: E/AndroidRuntime(27521): FATAL EXCEPTION: main
04-21 00:07:35.380: E/AndroidRuntime(27521): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.petedroid.euro2012/com.petedroid.euro2012.psquads}: java.lang.NullPointerException
04-21 00:07:35.380: E/AndroidRuntime(27521): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
04-21 00:07:35.380: E/AndroidRuntime(27521): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
04-21 00:07:35.380: E/AndroidRuntime(27521): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
04-21 00:07:35.380: E/AndroidRuntime(27521): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
04-21 00:07:35.380: E/AndroidRuntime(27521): at android.os.Handler.dispatchMessage(Handler.java:99)
04-21 00:07:35.380: E/AndroidRuntime(27521): at android.os.Looper.loop(Looper.java:123)
04-21 00:07:35.380: E/AndroidRuntime(27521): at android.app.ActivityThread.main(ActivityThread.java:4627)
04-21 00:07:35.380: E/AndroidRuntime(27521): at java.lang.reflect.Method.invokeNative(Native Method)
04-21 00:07:35.380: E/AndroidRuntime(27521): at java.lang.reflect.Method.invoke(Method.java:521)
04-21 00:07:35.380: E/AndroidRuntime(27521): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:871)
04-21 00:07:35.380: E/AndroidRuntime(27521): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:629)
04-21 00:07:35.380: E/AndroidRuntime(27521): at dalvik.system.NativeStart.main(Native Method)
04-21 00:07:35.380: E/AndroidRuntime(27521): Caused by: java.lang.NullPointerException
04-21 00:07:35.380: E/AndroidRuntime(27521): at com.petedroid.euro2012.psquads.onCreate(psquads.java:24)
04-21 00:07:35.380: E/AndroidRuntime(27521): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
04-21 00:07:35.380: E/AndroidRuntime(27521): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
04-21 00:07:35.380: E/AndroidRuntime(27521): ... 11 more
04-21 00:08:14.755: I/dalvikvm(27521): threadid=3: reacting to signal 3
04-21 00:08:17.415: E/dalvikvm(27521): Failed to write stack traces to /data/anr/traces.txt (-1 of 2650): Math result not representable
04-21 00:08:26.317: I/Process(27521): Sending signal. PID: 27521 SIG: 9